21768849729

Names of 21768849729

• Cardinal: 21768849729 can be written as Twenty-one billion, seven hundred sixty-eight million, eight hundred forty-nine thousand, seven hundred twenty-nine.

Scientific notation

• Scientific notation: 2.1768849729 × 10¹⁰

Factors of 21768849729

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 106

Divisors of 21768849729

• Number of divisors d(n): 96
• Complete list of divisors:
  1 3 9 11 31 33 61 93 99 121 183 279 341 363 549 671 961 1023 1089 1331 1891 2013 2883 3069 3751 3993 5673 6039 7381 8649 10571 11253 11979 17019 20801 22143 29791 31713 33759 41261 58621 62403 66429 81191 89373 95139 116281 123783 175863 187209 228811 243573 268119 327701 348843 371349 527589 644831 686433 730719 983103 1046529 1279091 1817251 1934493 2059299 2516921 2949309 3604711 3837273 5451753 5803479 7093141 7550763 10814133 11511819 16355259 19989761 21279423 22652289 32442399 39651821 59969283 63838269 78024551 118955463 179907849 219887371 234073653 356866389 659662113 702220959 1978986339 2418761081 7256283243 21768849729
• Sum of all divisors σ(n): 36324627456
• Sum of proper divisors (its aliquot sum) s(n): 14555777727
• 21768849729 is a deficient number, because the sum of its proper divisors (14555777727) is less than itself. Its deficiency is 7213072002

Bases of 21768849729

• Binary: 10100010001100001100100100101000001₂
• Hexadecimal: 0x511864941
• Base-36: A00LZY9

Squares and roots of 21768849729

• 21768849729 squared (21768849729²) is 473882818523783373441
• 21768849729 cubed (21768849729³) is 10315883865599217868985818647489
• The square root of 21768849729 is 147542.7047637395
• The cube root of 21768849729 is 2792.1912415307

Scales and comparisons

• 21,768,849,729 seconds is equal to 692 years, 9 weeks, 3 days, 6 hours, 42 minutes, 9 seconds.
• To count from 1 to 21,768,849,729 would take you about one thousand, three hundred eighty-four years!

  This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 21768849729 cubic inches would be around 232.7 feet tall.

Recreational maths with 21768849729

• 21768849729 backwards is 92794886712
• The number of decimal digits it has is: 11
• The sum of 21768849729's digits is 63
• More coming soon!